Python如何精准判断某个进程是否在运行

pip install psutil

import psutil

def is_process_running(process_name):
    for proc in psutil.process_iter(['name']):
        if proc.info['name'] == process_name:
            return True
    return False

if is_process_running('chrome.exe'):
    print("Chrome正在运行！")
else:
    print("Chrome未运行")

import os

def check_process_win(process_name):
    return os.system(f'tasklist | find "{process_name}"') == 0

print("Notepad运行中" if check_process_win('notepad.exe') else "未找到记事本")

def check_process_linux(process_name):
    return os.system(f'pgrep -f "{process_name}"') == 0

import subprocess

def get_process_details(name):
    try:
        output = subprocess.check_output(['ps', '-aux']).decode()
        return [line for line in output.split('\n') if name in line]
    except:
        return []

chrome_processes = get_process_details('chrome')
print(f"找到{len(chrome_processes)}个Chrome进程")

import psutil
import sys

current_pid = os.getpid()
for proc in psutil.process_iter(['pid', 'name']):
    if proc.info['name'] == 'python.exe' and proc.info['pid'] != current_pid:
        print("已有Python进程在运行！")
        sys.exit()

import time

while True:
    if not is_process_running('nginx.exe'):
        os.system('start nginx')  # Windows启动命令
        print("检测到Nginx崩溃，已重启！")
    time.sleep(60)  # 每分钟检查一次

# 用psutil的cmdline属性
[p.cmdline() for p in psutil.process_iter() if 'python' in p.name()]

import psutil

class ProcessMonitor:
    @staticmethod
    def is_running(name):
        """检查进程是否存在"""
        return name in (p.name() for p in psutil.process_iter(['name']))
    
    @staticmethod
    def kill_process(name):
        """结束指定进程"""
        for proc in psutil.process_iter(['name']):
            if proc.info['name'] == name:
                proc.kill()
                return True
        return False

​​​​​​​# 使用示例
if ProcessMonitor.is_running('notepad.exe'):
    print("发现记事本进程")
    ProcessMonitor.kill_process('notepad.exe')